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中文摘要：
为了检测彩色岩石节理裂隙边缘，同时抑制由其它色彩引起的噪声。本文将彩色图像像素的R、G、B分量作为彩色空间矢量的三个分量形成纯虚四元数，利用四元数卷积及旋转相关知识，得到彩色图像边缘检测方法并运用于岩石节理裂隙的检测中。同时，本文提出了一种简化的四元卷积方法。为了抑制噪声并对边缘准确定位，本文将不同尺度下的四元数卷积进行平均加权。实验结果表明，本文提出的方法针对岩石节理裂隙检测有较好的效果，具有重大的工程实用价值。
英文摘要：
Rock fractures have a strong impact on the radionuclide transport and retention. We sampled a number of rock specimens and then acquired the rock fracture images. The quatemion convolution can be used to detect the rock fracture edges. In this paper, a simplified quaternion convolution algorithm is presented and a set of quaternion masks at different scales are presented. The signs are computed for modulus maximum suppression in the horizontal and vertical direction respectively. In order to suppress the noise, we use the average weighting for the results at different scales. Experimental results show that the proposed method is effective and robust. Moreover, this method has an important contribution to rock engineering.
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